Condensing and vacuum draft mechanism for furnaces.



F. McGAHAN. CONDENSING AND VACUUM DRAFT MECHANISM FOR FURNACES.

APPLICATION FILED APR. 9, I914.

Patented Feb. 20, 1917.

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F. L. MGAHAN.

CONDENSING AND VACUUM DRAFT MECHANISM -FOR FURNACES.

- APPLICATION-"FILED APR.'9, 1914. 1,217,100. Patented Feb. 20, 1917.

5 SHEETS-SHEET 2.

m flftorn y F. L. McGAHAN.

CONDENSING AND VACUUM DRAFT MECHANISM'FOR FURNACES.

APPLICATION FILED APR. 9. 1914.

1,217,100. Patented Feb.20,191 7.'

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F. L. McGAHAN. CONDENSING AND VACUUM DRAFT MECHANISM FOR FURNACES.

APPLICATIQN FILED APR. 9, 1914.

. Patented Feb. '20, 1917.

5 SHEETS-SHEET 4 F. L. McGAHAN.

' connzwsme AND VACUUMDRAFTI/MECHANISM ron FURNACES.

APPLICATION men APR. 9. 1914.

Patented Feb. 20, 1917.

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' FREDERICK L. MOGAHAN, DE LOS ANGELES, CALIFORNIA.

CONDENSING AND VACUUM DRAFT MECHANISM FOR, FURNACES.

' Specification of Letters Patent.

Patented Feb. 20, 1917.

Application filed April 9, 1914. Serial No. 830,617.

-Vacuum Draft Mechanism for Furnaces, of

which the following is a specification.

In the treatment of ores and the reduction from the raw state of metal and other substances, a great loss of valuable matter has hitherto been the result of smelting operations with the use of the prevailing types,

of smelting and reduction apparatus, inasmuch' as no practical method of treating and preserving the unconsumed gases from the furnacehas been devised or used in connection with the apparatus, and as a result, the finer particles of matter which form a part of and are carried off with the gases I from the furnace, and which comprise frequently in no small quantity, some of the valuable metals, are vented through the stack and distributed broadcast over the ground in the vicinity of the plant.

- It is, therefore, an object of my invention to provide a means of treating the unconsumed gases from the furnace so that the fine particles may be preserved, and whereby all of the valuable matter in these gases may be separated therefrom, and the gases after the separation further utilized in the operation of the plant.

A further object is to provide a means which may be used in connection with any fuel burning plant for the production of power, light or heat, whereby. all of the heat units in the combustible matter may be used and none of the valuable units or elements allowed to escape. Y

Other objects may appear in the subjoined detail description of my apparatus, as illustrated in the accompanying drawings forming a part of this application, and in which:

Figure 1 is a plan of my apparatus with parts of the structure broken away;

Fig. 2 is a side elevation, partly in section;

Fig. 3 is a sectional elevation of the condenser on the line w a2 Fig. 1;

Fig. 4 is a sectional plan of the same on the line a2' m*, Fig. 3.

Fig. 5 is a sectional plan of the same on r the line an w, Fig. 3.

Fig. 6 is a sectional plan of the same on the line ww, Fig. 3.

Fig. 7 is a fragmentary plan of the roller bearlngs;

Fig. 8 is a partial enlarged elevation of p the condenser and governor connections;

Fig. 9 is an end elevation of the apparatus;

Fig. 10 is a sectional plan of the governor yoke and sleeve on the line m w Fig. 8.

Similar characters of reference indicate the same parts throughout the specifications and the several views of the drawings.

Reference is had to a previous application filed by me in the United States Patent Office on the 26th day of February, 1914, Serial No. 822,234, for a processfor the treating of ores and substances, in which is shown certain other elements adapted to cooperate with this invention in the treatment of ores and substances of various character, and in which a more elaborate and detailed description of the entire plant and the functions thereof, is given.

It is intended to include in this application, only the condenser and its co-acting elements, but it is thought necessary to describe in a limited way and to partially illustrate, several other of the elements of the plant, in order that a clear idea of the operation and functions of myinvention may be had, and its relation to the other elements of the plant, not shown, established.

My condenser comprises the base 1, which .is adapted to be mounted on a suitable structure, not shown ;'the condenser shell 2 which is cylindrical in form; and the head'3; the shell 2 being suitably secured to the base 1 by the cap screws 4, and the head 3 being secured to the top of theshell 2 by the bolts 5. The shell 2 has the gas chamber 6 at the may be drawn from the condenser. for use in the operation of the plant. The central,

105. or condensingportion of the shell 13, is

n; angle and is adapted to he of the chamber 13 has an and a tunnel shaped lschargihg the water there the shell 2 has is secured to wall of sens the bolts 38 j "Kl this fuiinei serves into the two chamwhich serves as iy toward to receive lee vertical the head 3 18 proi revolve in the chamber 3, and the eader 2% adapted to where 15, the water onical in form and havd 28 at the top and hotoy means of which it may it 22. The periphery of has the helical vanes the internal flange 30 with a hall is adapted to register with t ace on he flange 16 and adapted to erig t e uoper portion of the balls 2-1, t g ias the external flange 32 lower side to conform to and adapted st upon the rollers 19, and the flanges lad are connected with the 28, respeetively by the radial 22 extends upwardly through a: distance, is provided with the loevel gear 40 adjacent the head 3, and with the vertically slidahle sleeve ell which has an annular grooves-2 adapted to be engaged by th e rollers which are revoluloly mounted on the erids of the yoke 45. T he upper end 16 or the shaft 22 is reduced and has'the sleeve l? revoluhle thereon and adapted to till he held by the hut e8. 'lhc'govemor rods are pivoted their upper ends to suitable ears on the sleeve i? and at their lower ends are provided with the ordinary govern i halls 51 the rods 50; and the balls 51 being held an angle to the shaft 22 by meaiis the rods 52 which are pivoted at source of water supply,.

o u the hearings 23 on will be caused to revolve at a high s snuel into the chamber Q J 7 i aoove the head 3 for a suitable the vacuum chamber 35. The base 1 form is terposed and compressed between the sleeve l-l and the bevel gear 40 and the op /va movement of the sleeve 4:1 is l' means'of the set collar 56 held tight on shaft 22 by the set screw 5?,

The governor yoke as is pivote outer end iii the bracket 58 ch cured to the bee l 8 by the bolts 59, outer end of the yoke is-conhected quick opening valve iii the wet LOU pipe 15, by means the vertic pivoted at upper end to the yr A its lower end to the outer end 0' lever '62, A pipe 63, shown provided, which parallels the 1 suitable water storage tank, not show 21 to which both of said pipes are CORD the pipe 63 being also cohnected with able pump (not shown) and provide a suitable valve 6?, and the two pi c1: ss connected by means or" he and 65 and the valve 66. The a-rrar 1 shown. serving to provide a means is? the storage tanks, and as a supplying water to the water soieader i rect from pump in the event water in the tanks should become exhausted. The water from the pipe 15 "is directed against the vanes onithe water i which because of its frictionless and in the event that the speed of the spreader should become excessive the centrifugal force will cause the balls 51 swing outwardly, the sleeve ll will caused to rise on the shaft 22, the or s end of the yoire l5 will swing downwardly on its pivot, and the valve lever ,62 will wholly or partially close the valve (30 thus accommodating the speed of the water spreader to the quantity of water delivere l through the Valve 60, and preventing an excessive speed of the former. The operation of the valveGO may be regulated by changing the position of the set collar 56 on the upper end of the shaft 22, and a resiliency is attorded in the vertical movement of the sleeve ll by means of the spring 55.

In the operation of the spreader, the water from its periphery will be discharged at the bottom through the funnel shaped opening 17, and in its discharge from the spreader 129 will be formed into a sheet, from whence it will be directed through the funnel 27 into the lower chamber 36, the funnel 2'? serving to prevent the accumulation of the water in ing the bottomof the Water chamber 36 is provided with a plurality of discharge openings 68 connected with. the discharge'pipes 69 leading to the separator tanks 77, and these openings 68 are arranged, preferably at equal distances apart, and concentrically with regard to the base 1.

The. fan 25, which may be of any suitable type, is of the induction type and serves to draw the heavier gases and substances from the stack 9 and the chamber 6 into the condensing portionof the water spreader 26, the temperature of the latter being cooler than that of the stack 9 at which point' a partial condensation of the fumes will bev effected and the condensed solid matter will fall into the lower portion of the condenser, while the more volatile substances will be carried off through the outlet 11.

At one side'of the condenser, I provide a suitable structure 70 comprising the vertical .c0lumns'71, the longitudinal members 72, the

lateral members 73, and the platform 7 4; the entire structure being suitably braced and connectedwith the condenser by the angle brackets 75. In thecenter of the structure 70 and on aline with the center of the shaft 22 of the condenser, I arrange a plurality of vertically disposed vacuum tubes 76, the

- 84 and a lower chamber 82, separated by the partition 80 which is provided with the'port 81 for afi'ording communication between the two chambers, the chamber 82 is connected with the vacuum chamber 35 of the condenser, by means of the pipes 83 arranged at equal distances apart on the condenser and the upper chambers 84 are connected with the stack 9 by the pipes 85, the connection of l the pipes 85 with the stack 9, bein arranged at suitable intervals, as may be ound convenient. r

The crank shaft 86 is revolubly mounted in the bearings 87 and 88 secured to the head 3. of the condenser and in the bearings 88' secured to the standards 89 which are mounted upon the structure'70. The crank shaft is provided with a plurality of cranks 90, one for each of the tubes 76 and each of the cranks being centrally positioned above its respective tube. The piston rods 91 are pivoted to the connecting rods 92 at their upper ends and secured to the pistons 93 at their lower ends; the-connecting rods 92 are pivoted at their upper ends to the cranks90,

and the pistons 93 are adapted to slide vertically inthe upper chambers 84 of the vacuum tubes 76 and to simultaneously open and close theports 81 and 96. The pistonrods 91 are (provided with the compression springs 94 a apted to compress between the pistons 93 and the hubs 95 on the, heads 78 and thus provide a resiliency in the operation of the pistons.

"The crank shaft 86 has a bevel gear 97 on I its inner end adapted to mesh with and be driven by the gear 40 on the shaft 22 for transmitting motion from the centrifugal water spreader to the valve pistons in the vacuum tubes.

A suitable vacuum pressure gage98 may be connected with the chamber 82 in the tubes 76. The Water from the condenser will rise in the separator tanks 77 to a point near the top of the tanks, and necessarily a certainamount of thiswater will rise in the tubes because of the vacuum therein.

The discharge of 'the water fro-1n the spreader 26 and the flow of the water through the funnels below causes a suction in the chamber 35 which serves to draw the air from the tubes 76 and causes an evacuation the chamber 35 and the tubes 7 (i.

The arrangement of the cranks on the shaft 86 is such that some one of the-ports 81 and also 96 is open all of the .time, this arrangement being similar to the crank shaft thereof, thus producing a partial vacuum in of an engine, and as the piston rises inthe' upper chamber 4, the ports are opened and a draft created in the pipes connected with the stack 9, the draft being sufficient to draw the gases from thefurnace to apoint where the suction caused by the fan 25 may take them up and drawthem into the gas chamber 6 of the condenser, and as the cranks operate intermittently and regu- -'larly, one at a time, the sets of ports in the tubes 76 are successively opened along the line of tubes in regular order and a perpetual draft in the stack obtained. A small amount of the gases from the furnace will necessarily be drawn into the lower-clnnnbers 82 of the tubes 7 6 when these chambers are in communication with the stack, but the suction in the chamber of the condenser will cause their withdrawal with the air from the chambers, and being mixed with the water in the condenser, they will be condensed with the, heavier gases and converted into their constituent-elements.

The sediment that results from the condensation of the gases together with the water from the spreader is drawn off through the. ipes 69 and stored in the separator tanks 77, the pipes 69 being provided with suitable valves 101 so that any one or more of the tanks may be shut off from conimunication with the condenser in case of an emergency.

My condenser, as herein disclosed may be made to perform all of the functions of a smoke consumer, and at the same'time separate from the ases from. the stack all of the valuable meta s and particles of matter; it-

may be attached to and used in connection with any style of furnace as used for any I commercial purpose, and the form may be modified to adapt it to use with the various styles of furnaces.

Having thus described my invention, what I claim as new and desire Letters Patent for, is:

1. A. condensing mechanism for a furnace ,comprising a gas chamber, a centrifugal externally helically vaned water spreading means below said chamber, and means for the discharge of the water therefrom.

2; In a device of the character described, the combination of acondenser adapted to be connected with a furnace and having a gas chamber adapted to receive the gases therefrom; means for separating the heavier elements from said gases and treating them with water; and means for discharging said gases from said chamber for further treatment. p

I 3. In apparatus of the character described, a casing provided near one end with a gas receiving chamber and having a condensing chamber disposed near the gas receiving chamber, a gas supply conduit leading into the gas receiving chamber, a rotatable water spreading element arranged within the condensing chamber, means to supply water into the condensing chamber to impinge against the rotatable water spreading element to drive it, and centrifugally operated means driven by the rotatable water spreading element and serve upon its exterior with vanes, means to supply water into the condensing chamber to impinge against therotatable water spreading element to drive it, and a rotatable fan arranged in the gas receiving chamber and near the upper end of the tubular water spreading element, and rotatable therewith.

5. In apparatus of the character described, a casing provided near one endwith a gas receiving chamber and having a condensing chamber disposed near the gas receiving chamber, a shell secured to the opposite end of the'casing and having an retrace spreading element for driving it, a, gas supply. conduit connected with the as receiving chamber, and a suction condu t connected with the gas supply conduit and with the vacuum chamber.

6. In apparatus of the character described, a casing provided near one end with a gas receiving chamber and having a condensing chamber disposed near the gas receiving chamber, a shell secured to the opposite end of the casing and having an apertured partition for dividing the same into communicating vacuum and water chambers, a rotatable tubular water spreading element arranged within the condensing chamber, means for introducing water into the condensing chamber to impinge against the rotatable tubular water spreading element for driving it, a gas supply conduit connected with the gas receiving chamber,

a suction conduit connected with the supply conduit and the vacuum chamber, a valve connected in the suction conduit, and means operated by the rotatable spreading element for operating the valve.

7. In apparatus of the character described, a casing provided with a gas receiving chamber and having a condensing chamber disposed near the first named chamber, a gas supply conduit leading into the gas receiving chamber, water spreading element arranged within the condensing chamber, means to supply water to impinge against the water spread- 1 ing element to drive it, a fan connected with. the water spreading element to rotate therewith and arranged within the gas receiving chamber to draw gas therein from the gas supply conduit, and apparatus actuated by the water spreading element and connected with the conduit at a point remote from connection with the gas receiving charr er to draw gas in the conduit toward the ran which in turn draws it into the gas receiving chamber.

FREDERICK L.

McGAHAlI,

a rotatable tubular 

